Study of photovoltaic effect photovoltaic HgCdTe detector irradiated by spectral unrelated laser

A spectral unrelated laser was induced on the short wave and medium wave photovoltaic HgCdTe infrared detectors respectively, under various power density, the detectors had a serious of output. The results show that the two detectors all had response of spectral unrelated laser, but the response was in the opposite direction. Through the analysis of experimental phenomena, it is found that carrier concentration of detectors before laser irradiation is the reason why the response of detectors was in the opposite direction. It showed valuable clue for future research on photovoltaic HgCdTe irradiated by spectral unrelated laser.